Object colours disappear when I turn on 'Texture Solid'
The colors will appear once you render the picture. I had this same problem.

Go under System Preferences > Input , and look for Emulate Keyboard (turn this on temporarily). Now exit out of that and press 0 on the keyboard. The exterior should go grey and show a frame. use Shift + F to navigate and find your desired camera angle then click Render on the side of the screen in the render settings menu.